Ore-sampling apparatus.



J. A. VAN MATER.

ORE SAMPLING APPARATUS.

APPLICATION FILED MAY 22, 1908.

946,744,. mm Jan. 18,1910.

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ORE SAMPLING APPARATUS.

. APPLICATION FILED MAY 22, 1908. 94 ,744, Patented Jan. 18,1910.

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ORE-S MPLING APPARATUS.

To all whmn it maa oncern:

, lie it known that. I. Jasm n A. VAN MA- run. a citizen of the United States, residing at lla-infield, county of Union, State of New Jersey. have invented certain new and useful Improvements in Ore-Sampling Apparatus. of which the following is a full, clear. and complete disclosure.

.\l v invention relates to that class of devices by which samples of ore are withdrawn from bodies or quantities of ore being crushed. ground. or otherwise handled, during the various processes to which ores are subjected in the different arts.

Samples of the ore should be abstracted from the main body at. definite and uniform intervals. in order that its quality and other characteristics may be determined at all times by suitable assays or. other analytic tests. lleretofore the withdrawal of ore for sampling or testing purposes has usually been accomplished by hand, and has, been subject to the inaccuracies and variableness usually consequent from manual operations.

The object of my invention is to produce a device for withdrawing samples from a traveling body of ore at definite and regular intervals and in uniform quantities and proportions relative to the main body of the ore or similar granular material.

A further object of my invention is to.

provide a device of \the class mentioned which may be used in connection with the usual forms of conveyers and similar devices for carrying ores from one place to another and which may be easily adapted to any desired rate of sampling according to the percentage of the ore that it is necessary or preferred to test.

For a detailed description of one form of my invention which I at present deem preferable, reference may be had to the following specification and to the accompanying drawing forming a part thereof, in which Figure 1 is a side elevation of a belt conveyer having my improved sampling device applied thereto and showing the main driving pulley and belt in dotted lines to avoid confusion; Fig. 2 is a plan view of the same; Fig. 3 is a front elevation of the sampling bucket; Fig. 4 is an end elevation of the same as shown in Fig. 3; and Fig. 5 is an end elevation of the bucket as it passes around thesprocket wheel and discharges the sample.

Specification of Letters Patent.' Patented Jan, 18 1910. Application filed May 22.1908. Serial No. 434,289.

Referring .to the drawing, the numeral 1 indicates a belt. conveyor constructed in any well-known manner, for conveying ore from one part of the ore treating plant to another, such as from a crusher to an automatic weighing scales, indicated at 2. 'The conveyer 1 is driven in the usual manner, such as by a pulley 3, about which runs a driving belt 4. The shaft 5, upon which the pulley 3 is carried, is also provided with a pulley (5, over which runs a belt 7. The belt 7 also passes over a second alloy 8, carried on a horizontal shaft 8. his shaft is provided with two sprocket wheels 10, adapted to carry the sprocket chains 11, which also run over to sprocket wheels 12 located at the other end of the sampling apparatus.

One or more of the links 13 of the sprocket chains 11 are provided with attachments 14, to which may be secured the horizontal trunnions or supports 15 for the sampling bucket 16. The trunnions 15 extend beyond the sprocket chains 11 at each end of the bucket 16, and are provided with grooved trolley wheels 17, adapted to run upon a suitable track, such as indicated by the angle irons 18. These angle irons are provided adjacent each run of the sprocket chains 11, in order that the buckets may be supported when moving toward and away from the body of ore discharged from the conveyor 1. Beneath the outer side of the sprocket wheels 10 a suitable chute or hopper 19 is situated, so as to receive the samples of ore discharged from the bucket or buckets 16 as they pass around said sprocket chains; These samples may be deposited in any suitable receptacle, such as a box or truck (not shown). The sampling bucket 16 is preferably made truncated in cross section, as indicated in Figs. 4 and 5, and the bottom thereof is provided with a V-shaped projection 20, so that when the bucket passes in the reverse direction through the stream of ore discharged from the conveyer 1, the ore will not be retained on the outside surface of the bucket.

In the operation of my improved sampling device it will be seen that the ore carried by the conveyer 1 falls from the belt as it passes over the drum at the upper end thereof, and passes downward in the form of a thin stream into the hopper of the automatic scales 12. Since the sprocket chains 11 are located so as to run beneath the end of the conveyor 1, the bucket or buckets 16, carried by the chains 11 I will periodically pass through the stream of ore falling into the scales 2. It will thus be seen that the eased 0f the chains 11 and the number (ff bu eta carried thereby will determine the percenta e of the ore abstracted from the main body 0? the we as it passes to said automatic scales,

and thus adjustment may be made to secure any definite percentage required for thepurpose of testing the quality and characterist cs of the main bod of the ore. For simplicity in illustration, have shown in Fig). 1 two such buckets carried by the link elts or chains 11, but it is obvious that a reater or .changes may be made without departing from the sgirit and scope of my inventioni and it will e appreciated that my improve .samplin device may be used in other locations an the drawings.

What I c aim and desire to protect by Letters Patent is:

1. In combination with a belt conveyer for producing a falling stream of ore a second conveyer comprising endless s rocket chains carrying a sampling bucket an disposed subin connection with otherforms of ore handling apparatus than that shown in Witnesses:

stantially arallel with said belt conveyor and adapts to carry said bucket throu h the stream of ore and to deliver the sam e collected by the bucket, substantially-as described.

2. The combination with a belt conve er for conveying and delivering a falling stream chore, of asecond chain and bucket convelyerxdisposedbeneath and substantially paral el w th the first conve er, and com rismg a series of sampling buc ets, spaced rom each other at uniform mtervals, and adapted to pass throu h and'com letely intersect the stream of fal in ore an extract therefrom a pre-defermine percentage of sample ore and to deliver the sample so collected, substantially as described.

3. In combination with a conveyor for conveying and delivering a falling stream' of ore, a chain and bucket conve er disposed beneath and substantially paral e1 with the first conveyer, and comprising one or more sampling buckets adapted to pass through and completely intersect the stream of falling ore and extract therefrom a predetermined percentage of sam le ore and to deliver the sample so collecte substantiallyas described.

Si ed at New York city, in the county 7 and tate of New York, this 21st day of May, 1908.

JOSEPH A. VAN MATER.

WALTER S. J ones, Eow. W. VAIL'L, Jr. 

